MF_EVENT_SESSIONCAPS_DELTA attribute

Contains flags that indicate which capabilities have changed in the Media Session, based on the current presentation.

Data type

UINT32

Remarks

This attribute contains a bitmask indicating which capabilities flags have changed. For a list of possible flags, see IMFMediaSession::GetSessionCapabilities. Bits are set to 1 in the bitmask for any of the following reasons:

The corresponding capabilities bit changed from 0 to 1.

The corresponding capabilities bit changed from 1 to 0.

The corresponding capabilities bit remained 1, but the details of the capability changed. For example, the maximum playback rate changed.